Download Neptune Facts Mr J Neptune is the eighth planet from the sun. It was

Curriculum-Based Measurement: Oral Reading Fluency Passage: Examiner Copy
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Neptune Facts
Mr J
Neptune is the eighth planet from the sun. It was the first planet to get its existence
predicted by mathematical calculations before it was actually seen through a telescope
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on Sept. 23, 1846. Irregularities in the orbit of Uranus led French astronomer Alexis
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Bouvard to suggest that the gravitational pull from another celestial body might be
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responsible. German astronomer Johann Galle then relied on subsequent calculations to
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help spot Neptune via telescope. Previously, astronomer Galileo Galilei sketched the
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planet, but he mistook it for a star due to its slow motion. In accordance with all the
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other planets seen in the sky, this new world was given a name from Greek and Roman
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mythology — Neptune, the Roman god of the sea.
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Neptune's cloud cover has an especially vivid blue tint that is partly due to an
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as-yet-unidentified compound and the result of the absorption of red light by methane
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in the planets mostly hydrogen-helium atmosphere. Photos of Neptune reveal a blue
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planet, and it is often dubbed an ice giant, since it possesses a thick, slushy fluid mix of
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water, ammonia and methane ices under its atmosphere and is roughly 17 times Earth's
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mass and nearly 58 times its volume, according to a NASA fact sheet. Neptune's rocky
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core alone is thought to be roughly equal to Earth's mass, NASA says.
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www.interventioncentral.org • Copyright © 2009 Jim Wright
Curriculum-Based Measurement: Oral Reading Fluency Passage: Student Copy
Neptune is the eighth planet from the sun. It was the first planet to get its existence
predicted by mathematical calculations before it was actually seen through a telescope
on Sept. 23, 1846. Irregularities in the orbit of Uranus led French astronomer Alexis
Bouvard to suggest that the gravitational pull from another celestial body might be
responsible. German astronomer Johann Galle then relied on subsequent calculations to
help spot Neptune via telescope. Previously, astronomer Galileo Galilei sketched the
planet, but he mistook it for a star due to its slow motion. In accordance with all the
other planets seen in the sky, this new world was given a name from Greek and Roman
mythology — Neptune, the Roman god of the sea.
Neptune's cloud cover has an especially vivid blue tint that is partly due to an
as-yet-unidentified compound and the result of the absorption of red light by methane
in the planets mostly hydrogen-helium atmosphere. Photos of Neptune reveal a blue
planet, and it is often dubbed an ice giant, since it possesses a thick, slushy fluid mix of
water, ammonia and methane ices under its atmosphere and is roughly 17 times Earth's
mass and nearly 58 times its volume, according to a NASA fact sheet. Neptune's rocky
core alone is thought to be roughly equal to Earth's mass, NASA says.
www.interventioncentral.org • Copyright © 2009 Jim Wright